Percussion instrument



FIG. 1 is a front isometric view of a percussion instrument, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof.

The broken lines represent the portions of the percussion instrument, which form no part of the claimed design. 

CLAIM The ornamental design for a percussion instrument, as shown and described. 